28.1.1999
XO0244E4_fm5.fm
5
Product: HPT-40 (Desktop Charger) / YO0244
7.3.1 General
The desktop charger is designed for charging NiCd or NiMH batteries when con-
nected to either a lighter socket charger or a 220 V mains charger. The desktop
charger has two units. The first unit is for the phone, and the second is for a reserve
battery pack. The additional battery pack can also be discharged to improve its per-
formance. The battery capacity and type are read from the memory within the bat-
tery pack before charging commences. If the battery memory is missing, empty, or
faulty, the charger will use the default values stored in the processor EEPROM.
7.3.2 Charging the phone
The desktop charger detects the phone by measuring a voltage in the VBAT line
voltage split. The charging process for the phone is such that the phone controls the
desktop charger processor, which in turn controls the charger connected to the
holder (lighter socket or mains). If the reserve battery pack is also being charged,
then the desktop charger splits the charging current between the phone and the bat-
tery. The phone is always assured of its required current (max. 1500 mA).
7.3.2.1 Discharging the phone battery
The phone indicates discharge state to the desktop charger by a control voltage
below 4.0 V. The charger will not then supply any current to the phone, and a red led
is illuminated in the phone charging indicator. The charger takes no other part in the
discharging process.
7.3.3 Charging the spare battery
The spare battery charging process has three phases: quick charge, continuous
charge, and stand-by charge. The charging sequence starts with quick-charge, and
ends with stand-by charging. The sequence is re-started only if there is a break in
the power supply or the battery is removed from its holder. Accidental shorting of the
charger contacts is prevented by the charging current being supplied to the contacts
after the battery has been in the holder for approx. 1s. Battery recognition is done
with the NTC line. During charging, the desktop charger updates the charge-indica-
tor counter in the battery-pack memory.
7.3.3.1 Quick-charge
The battery is detected in its holder when the A/D converter value is below 162
(U = 3.32 V). This corresponds to an NTC resitance value of 181 kohm, i.e. -20 C
temperature.
Quick charge only functions if the temperature is +10...+40 (A/D 75...28;
U = 1,46...0,55 and NTC resistance 41,8...12,2 kohm). Charging is accomplished by
directing the charger to give a 1500 mA current. The current is split by the switches
Q101 and Q102 in turn, according to the relative requirements of the phone and
Summary of Contents for DELTA TDP-40-TN2
Page 1: ...28 1 1999 Tdp40enTOC fm 1 Product TDP 40 TN2 Delta SERVICE MANUAL BENEFON DELTA TDP 40 TN2 ...
Page 16: ...1user_gb fm 1 2 0 OWNER S MANUAL ...
Page 46: ...28 1 1999 TDP 40E7_fm5 fm 1 Product TDP 40 TN2 6 0 PHONE S CONSTRUCTION ...
Page 77: ...28 1 1999 XA0300E4_fm5 fm 32 Product TDP 40 TN2 Delta OA0300 ...
Page 78: ...28 1 1999 XA0300E4_fm5 fm 33 Product TDP 40 TN2 Delta OA0300 ...
Page 79: ...28 1 1999 XA0300E4_fm5 fm 34 Product TDP 40 TN2 Delta OA0300 ...
Page 80: ...28 1 1999 XA0300E4_fm5 fm 35 Product TDP 40 TN2 Delta OA0300 ...
Page 81: ...28 1 1999 XA0300E4_fm5 fm 36 Product TDP 40 TN2 Delta OA0300 ...
Page 90: ...28 1 1999 XS030ZE4_fm5 fm 45 Product TDP 40 TN2 Delta OS0320 Solder Side Layout PS0300A1 ...
Page 96: ......
Page 97: ......
Page 98: ......
Page 103: ...28 1 1999 XQ0300E4_fm5 fm 58 Product TDP 40 TN2 Delta OQ0300 Regulator ...
Page 106: ...28 1 1999 XT0300E4_fm5 fm 61 Product TDP 40 TN2 Delta OT0300 Antenna Switch ...
Page 111: ...28 1 1999 XO0300E4_fm5 fm 66 Product TDP 40 TN2 Delta PO0403 ...
Page 112: ...28 1 1999 8HAR_GB fm 1 7 0 CHARGING CHARGING ...
Page 115: ...28 1 1999 XO0244E4_fm5 fm 4 Product HPT 40 Desktop Charger YO0244 7 3 DESKTOP CHARGER YO0244 ...
Page 128: ...28 1 1999 XO0244E4_fm5 fm 17 Product HPT 40 Desktop Charger OO0244 ...
Page 129: ...28 1 1999 XO0244E4_fm5 fm 18 Product HPT 40 Desktop Charger OO0244 ...
Page 139: ...28 1 1999 Xo0314e4_fm5 fm 10 Product CIU 40 Carbox OW0314 The Top Side Layout PW0314A1 ...
Page 140: ...28 1 1999 Xo0314e4_fm5 fm 11 Product CIU 40 Carbox OW0314 The Bottom Side Layout PW0314A1 ...
Page 141: ...28 1 1999 Xo0314e4_fm5 fm 12 Product CIU 40 Carbox OW0314 ...
Page 142: ...28 1 1999 Xo0314e4_fm5 fm 13 Product CIU 40 Carbox OW0314 ...
Page 143: ...28 1 1999 Xo0314e4_fm5 fm 14 Product CIU 40 Carbox OW0314 ...
Page 144: ...28 1 1999 Xo0314e4_fm5 fm 15 Product CIU 40 Carbox OW0314 ...
Page 145: ...28 1 1999 Xo0314e4_fm5 fm 16 Product CIU 40 Carbox OW0314 ...
Page 146: ...28 1 1999 XMOO24E4_fm5 f 17 Product HDH 40 Phone holder YM0024 8 2 PHONE HOLDER YM0024 ...
Page 147: ...28 1 1999 XMOO24E4_fm5 f 18 Product HDH 40 Phone holder PO0243 Component Side Layout PO0243 ...
Page 148: ...28 1 1999 XMOO24E4_fm5 f 19 Product HDH 40 Phone holder PO0243 Solder Side Layout ...
Page 149: ...28 1 1999 XMOO24E4_fm5 f 20 Product HDH 40 Phone holder OO0343 module OO0343 module ...
Page 156: ...28 1 1999 8HDS50GB_fm5 f 27 Product HDS 50 Ext Handset With Cradle HLS 41 HDS 50 HXS 40 ...
Page 158: ...28 1 1999 8OSET_GB fm 1 9 0 OFFICE SET OFFICE SET ...
Page 172: ...28 1 1999 8dds40gb_fm5 fm 15 Product DDS 40 Office set OO0300 ...
Page 173: ...28 1 1999 8dds40gb_fm5 fm 16 Product DDS 40 Office set OO0300 ...
Page 174: ...28 1 1999 8dds40gb_fm5 fm 17 Product DDS 40 Office set OO0300 ...
Page 176: ...28 1 1999 8dds40gb_fm5 fm 19 Product DDS 40 Office set OO0301 ...
Page 178: ...28 1 1999 8dds40gb_fm5 fm 21 Product DDS 40 Office set OO0302 ...
Page 179: ...28 1 1999 8dds40gb_fm5 fm 22 Product DDS 40 Office set OO0302 ...
Page 186: ...28 1 1999 8hxs40gb_fm5 fm 29 Product HXS 40 External Handset HLS 41 HDS 50 HXS 40 ...
Page 187: ...28 1 1999 8OTHE_GB fm 1 10 0 OTHER ACCESSORIES OTHER ACCESSORIES ...
Page 199: ...28 1 1999 Xo0245e4_fm5 fm 13 Product LIF 40 Line Interface OO0245 Solder Side Layout PO0245A0 ...
Page 200: ...28 1 1999 Xo0245e4_fm5 fm 14 Product LIF 40 Line Interface OO0245 ...
Page 201: ...28 1 1999 Xo0245e4_fm5 fm 15 Product LIF 40 Line Interface OO0245 ...
Page 202: ...28 1 1999 Xo0236e4_fm5 fm 16 Product DB 40 Branching Unit YO0236 10 2 BRANCHING UNIT YO0236 ...
Page 208: ...28 1 1999 Xo0236e4_fm5 fm 22 Product DB 40 Branching Unit OO0241 ...